Final stroke, events should be loaded from disk on server startup.
Also check the validity of their bodies if possible during loading.
sql/event_data_objects.cc:
Remove Event_job_data::free_sp(), move the code to the destructor
Change the way we change the security context
Steal some code from sql_parse.cc
sql/event_data_objects.h:
Remove free_sp()
Make compile() public, to be used when booting for verifying the integrity of mysql.event
sql/event_queue.cc:
Make the queue load events from disk on server boot.
Compile and thus check for integrity the events.
sql/event_queue.h:
shift methods around. add queue_loaded boolean.
sql/event_scheduler.cc:
Rename init_event_thread() to pre_init_event_thread()
and make it more generic.
Add post_init_event_thread()
Export these two as well as deinit_event_thread().
Now it is quite easy to write code to spawn a new event thread
whenever needed.
sql/event_scheduler.h:
export pre_init_event_thread(), post_init_event_thread() and deinit_event_thread()
to simplify writing of thread functions.
sql/events.cc:
Events::init() returns only one error code, then make it bool
sql/events.h:
Events::init() returns only one error code, then make it bool
sql/mysqld.cc:
Check the return code of Events::init()
sql/sp_head.cc:
Add trace info
sql/sql_class.cc:
Reorganize thd::change_security_context() to load main_security_ctx
sql/sql_class.h:
Reorganize thd::change_security_context() to load main_security_ctx
sql/sql_lex.cc:
Initialize lex->spname
sql/sql_yacc.yy:
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